import logging
import time
import json
from datetime import datetime, timedelta

class DeviceController:
    def __init__(self, config):
        self.config = config
        self.logger = logging.getLogger('DeviceController')
        self.ptz_status = {
            'pan': 0,
            'tilt': 0,
            'zoom': 1
        }
        self.logger.info("设备控制器初始化完成")
    
    def execute_ptz_command(self, channel_id, command):
        """执行PTZ控制命令"""
        self.logger.info(f"执行PTZ命令: {command} 在通道 {channel_id}")
        
        try:
            # 解析PTZ命令
            if len(command) >= 8:
                cmd_type = command[0:2]
                param = command[2:8]
                
                if cmd_type == "A1":  # 水平移动
                    direction = int(param[0:2], 16)
                    speed = int(param[2:4], 16)
                    if direction == 1:  # 右移
                        self.ptz_status['pan'] += speed
                    elif direction == 2:  # 左移
                        self.ptz_status['pan'] -= speed
                        
                elif cmd_type == "A2":  # 垂直移动
                    direction = int(param[0:2], 16)
                    speed = int(param[2:4], 16)
                    if direction == 1:  # 上移
                        self.ptz_status['tilt'] += speed
                    elif direction == 2:  # 下移
                        self.ptz_status['tilt'] -= speed
                        
                elif cmd_type == "A3":  # 缩放
                    direction = int(param[0:2], 16)
                    speed = int(param[2:4], 16)
                    if direction == 1:  # 放大
                        self.ptz_status['zoom'] = min(10, self.ptz_status['zoom'] + 1)
                    elif direction == 2:  # 缩小
                        self.ptz_status['zoom'] = max(1, self.ptz_status['zoom'] - 1)
            
            self.logger.info(f"新的PTZ状态: 水平={self.ptz_status['pan']}, "
                           f"垂直={self.ptz_status['tilt']}, 缩放={self.ptz_status['zoom']}")
            
            return True
            
        except Exception as e:
            self.logger.error(f"PTZ控制失败: {str(e)}")
            return False
    
    def query_recordings(self, channel_id, start_time, end_time):
        """查询录像记录"""
        self.logger.info(f"查询录像: {channel_id} {start_time} 到 {end_time}")
        
        try:
            # 模拟录像记录
            recordings = []
            
            # 解析时间格式
            start_dt = datetime.strptime(start_time, '%Y-%m-%dT%H:%M:%S')
            end_dt = datetime.strptime(end_time, '%Y-%m-%dT%H:%M:%S')
            
            # 生成每小时的录像记录
            current_time = start_dt
            while current_time < end_dt:
                record = {
                    'DeviceID': channel_id,
                    'Name': f"录像_{current_time.strftime('%Y%m%d_%H%M%S')}",
                    'FilePath': f"/records/{channel_id}_{current_time.strftime('%Y%m%d_%H%M%S')}.mp4",
                    'Address': self.config.local_ip,
                    'StartTime': current_time.strftime('%Y-%m-%dT%H:%M:%S'),
                    'EndTime': (current_time + timedelta(hours=1)).strftime('%Y-%m-%dT%H:%M:%S'),
                    'Secrecy': 0,
                    'Type': 'time',
                    'RecorderID': self.config.device_id
                }
                recordings.append(record)
                current_time += timedelta(hours=1)
                
            return recordings
            
        except Exception as e:
            self.logger.error(f"录像查询失败: {str(e)}")
            return []
    
    def start_broadcast(self, channel_id):
        """开始语音广播"""
        self.logger.info(f"在通道 {channel_id} 开始语音广播")
        # 这里可以添加实际的广播逻辑
        return True
    
    def trigger_alarm(self, alarm_type, description):
        """触发报警"""
        self.logger.warning(f"触发报警: {alarm_type} - {description}")
        # 这里可以添加实际的报警处理逻辑
        return True